Brick-kiln



(No Model.) 2 Sheets-Sheet 1.

W. A. EUDALY.

BRICK KILN.

Patented pot. '7, 18-90.

(No Model.) W A EUDALY 2 Sheets-Sheet 2.

, BRICK KILN.

No. 437,983. Patented 0011.7, 1890.

Zliz'inesses: \Z If 3* z (wk fi W I UNITED STATES WILLIAM A. EUDALY, OF CINCINNATI, OHIO.

'BRICK-KILN.

SPECIFICATION forming part of Letters Patent No. 437,983, dated October 7, 1890.

Application filed October 29, 1889- Serial No. 328,568. (No model.)

To all whom it may concern:

Be it known that I, WILLIAM A. EUDALY, of Cincinnati, in the county of .Hamilton and State of Ohio, have invented certain new and useful Improvements in Kilns; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which-form part of this specification.

My invention relates to certain improvements in kilns for burning brick, pottery, and other ceramic products.

The object of the invention is to provide an improved kiln having in View economy of fuel with a maximum production of heat and work from a minimum quantity of fuel and labor.

The invention consists in certain novel features of construction and in combinations of parts more fully described hereinafter, and particularly pointed out in the claims.

Referring to the accompanying drawings, Figure 1 is a horizontal section of two connected kilns, taken in a plane with the gratebars and bottoms of the kiln, the lower kiln being shown with a perforated bottom. Fig. 2 is a vertical section of portions of the kilns in the plane of the line mm, Fig. 1. Fig. 3 is a similar section in the plane of the line 00 m Fig. 1. Fig. 4 is'a longitudinal section of a kiln :in the plane of the line 50 00 upper kiln of Fig. 1.

In the drawings, the reference-letter 1V indicates the outer or inclosing wall of each kiln. Each kiln is provided with a series of furnaces G, located upon the exterior of the wall W and opening through the sameinto the interior of the kiln by means of the throat M, the wall on each side of each throat being provided with air-heating chambers o 0,

opening into the throats by means of passages c and supplied with fresh air through the The bottom of each kiln is divided into a suitable number of compartments H by the division-walls S, which also separate the induction-flues Z and eduction-flues F F of the kiln from each other.

Each compartment H in the bottom of the kiln is preferably provided with a discharge chimney O in the kiln-walls, having a large flue F, leading thereto and conducting the heat from said kiln into said chimney, and said chimneys are controlled by'the dampers (2 so that the exit through these chimneys can be closed or opened.

F F indicate two large fines in the bottom of the kiln, extending longitudinally and centrally the length of the kiln to the chimneys O C in the opposite ends of the kiln. These chimneys O are also controlled by dampers 61 The furnaces and bottoms on the adjoining sides of the two kilns are connected by the undergroundv flues Z Z, controlled by the dampers d. These flues extend beneath a furnace and throat of each kiln, and are connected with the throats of each furnace by vertical flues K, controlled by dampers d PATENT OFFICE.

Each compartment H is provided with a fine Z opening into the kiln and forming a continuation of an underground connecting-flue Z and adapted to conduct heat into the bottom of the kiln directly from afurnace of that kiln through throat N and flue K, or from the other kiln through underground flue Z.

The kilns are connected at the ends of the main flues F by underground fines Z, open-. ing into the ends of said fines F and controlled by dampers d.

The ends of the kilns and fines F are con nected by the underground flues Z Z controlled by dampers d (7, and at.

Z Z indicate a series of cross underground flues between the kilns and connecting the kilns through the fines Z, Z, or Z and controlled by the dampers (Z Cold air is admitted to the kiln through the air-inlets A, opening into the top ends of the tines F and F at the exterior of the wall of thekiln.

The kilns can be square, oblong, or round in shape without varying from the spirit or scope of this invention.

When it is desired to conduct a portion of.

the heat from a furnace directly to the articles in the bottom 'of the kiln, dampers d are opened and dampers d closed, whereby the heat is divided in the funnel-shaped throat M, a portion of it being carried up through the pocket B into the top of the kiln, and the remainder is carried directly into the bottom of the kiln through the flues K and Z and the heat,&c., from the kiln is discharged through the fiues F F in each compartment. If it is desired to conduct the heat from a burning or cooling kiln directly to the bottom of a burning-kiln, dampers d are opened and dampers d are closed, and the heat will pass into the fiues Z of one kiln, through the fiues Z to the fiues Z of the other kiln, and from this into the bottom of the kiln; or, if it is desired to introduce a portion of the heat'at the bottom and a portion at the top of the kiln, open dampers d and the heat will divide, a portion going through flue Z and the heat will pass up flue K, throat M, and the pocket B, and then down through the articles to be burned to the flues F and F and out through chimneys O and O; or, if desired, dampers d in flues Z and dampers (Pin the chimneys of one kiln may be closed and the dampers d in fiues Z opened, so that the heat will pass from one kiln to the other, and the first kiln will burn as a downdraft and the last one as an updraft; or, if desired, all the dampers except (1 and d can be opened and the first kiln will supply heat to partially burn the second kiln as an updraft -k-iln. When it is desired to carry the heat beyond the second kiln to a third kiln, open dampers d and d in the first kiln and close dampers d and d in the second kiln and open the same in the third kiln. The heat will then be drawn from the first kiln through the fines F and carried beyond the second kiln to the third kiln, into which it can be introduced through any of the fiues Z, Z, or F.

It is evident that various changes might be made in the form and construction of the parts described without departing from the spirit and scope of my invention. Hence I do not wish to limit myself to the precise construction herein set forth.

It will be observed that by this arrangement and method all the waste heat from a burning or cooling kiln is utilized and conveyed to another burningkiln, materially raising the temperature of the last kiln and economizing in fuel.

What I claim is- 1. In a downdraft-kiln, the combination of an exterior furnace, a fire-pocket opening into the upper portion of the kiln, a throat from the furnace to said pocket, a transverse horizontal flue in the bottom of the kiln opening into the same, and a vertical due from said throat to said horizontal flue provided with a damper, substantially as described.

2. In combination, a pair of kilns, horizontal transverse fiues in the bottom of the same opening into the kiln, an underground flue connecting said two kilns and opening into .the ends of corresponding transverse fines the main longitudinal discharge-flue in the.

bottom of the kiln opening into a chimney, and the separate transverse bottom dischargeflues provided with chimneys, substantially as described.

4. The combination, with two or more downdraft-kilns provided with furnaces communicating with fire-pockets opening into the tops of the kilns, of one or more fiues connecting the bottoms of said kilns and communicating with said pockets, and means to control said flues, so that the heat can be drawn from the bottom of one kiln into the bottom or top of the other kiln, substantially as described.

5. In combination, two kilns, furnaces for the same, separate transverse inlet-fiues in the bottom of each kiln from the furnaces, underground fiues connecting said two kilns and opening into the ends of corresponding,

inlet-fines in the same, transverse separate discharge-fiues in the bottom of each kiln communicating with chimneys, separate un-' derground connecting-fines opening into the ends of corresponding discharge-fines in each kiln, and dampers for said flues, substantially as described.

6. In combination, two or more kilns, furnaces for the same, a longitudinal dischargeflue in the bottom of each kiln opening into the kiln and into chimneys at one or both ends of the kiln, and an underground flue extending past the ends of said kilns and connected with the ends of the longitudinal discharge-flue of each kiln, and dampersfor controlling said flues, as set forth.

7. A downdraft-kiln having its bottom divided into compartments, in combination with two sets of non-communicating flues in each compartment, one set discharging heat into the kiln and the other conveying it out, substantially as described.

8. In combination, two or more kilns, furnaces for the kilns, each kiln having separate transverse inlet-fiues in its bottom from the furnaces opening into the kiln, separate fiues in its bottom communicating with chimneys, and a longitudinal bottom discharge flue connecting with chimneys at the ends of the kiln, the separate underground fines connecting, respectively, the corresponding transverse inlet flues in opposite kilns, un- In testimony that I claim the foregoing as derground fines connecting corresponding my ownI affix my signature in presence of to transverse discharge-fines in opposite kilns, two Witnesses.

underground fines connecting the ends of the longitudinal discharge-fines in said kilns, WILLIAM EUDALY' crossfiues connecting said underground fines, Witnesses:

and dampers controlling said fines, substan- J. D. MAONEALE,

tially as described. L. W. PIERCE. 

